Sleep less than 7 hours regularly
Stay dehydrated
Eat a high-salt diet
Cry frequently
Rub your eyes often
Smoke cigarettes
Drink alcohol heavily
Sleep flat on your back without elevating your head
Expose your eyes to allergens and irritants
Allow allergies or sinus congestion to go untreated
Gain weight rapidly
Age naturally over time
Use harsh skincare products around the eyes
Remove makeup roughly
Spend long periods staring at screens without breaks